Paint contains thinners, or solvents, that release volatile organic compounds as they evaporate. These contribute to smog and can pose health risks.
Modern oil-based paints, made with synthetic resins called alkyds, have less thinner and give off fewer odors and toxic fumes than their oil-based predecessors. Still, thinner is an essential component of alkyd paint.Because the thinner content of latex paint has always been much less than that of alkyd paint, there has been a dramatic shift over the years toward latex.
In fact, some oil-based paints are now restricted or illegal in certain regions. The already low solvent content of latex paints (a maximum of 8 percent) has been reduced to zero in some cases. These paints are marked “0 VOC” (for “zero volatile organic compounds”).
While this is good news for the environment, 0 VOC paint can be difficult to work with because it dries very quickly.
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